Driving mechanism for metal-planers.



' No, 769,377.v PATE NTED SEPT. 6', 1904.

v I GI AI I I DRIVING MECHANISM FOR METAL PLANERS.

APPLIOATIOH FILED JAN. 11, 1904,

,NO MODEL. 2 SHEETS-BEBE! 1.

I H I v 1" 2 H g Q \1 s H v m '3 I I I M Q "I L m. g 71 I 0 I! I PATENTED SEPT; 6, 1904.

No.!769,377. V

- G. A. GRAY.

DRIVING MECHANISM FOR METAL PLANERS.

APPLICATION FILED JAN. 11, 1904.

N0 MODEL.

: W si WI E '55'E5 I Razz/WWW sistent with satisfactory working, while the UNITED STATES GEORGE A. GRAY,

Patented September 6, 1904.

OF CINCINNATI, OHIO, ASSIGNOR TO THE Gr. GRAY COMPANY, OF CINCINNATI, OHIO.

DRIVING MECHANISM FOR METAL-PLANERS.

SPECIFICATION forming part of Letters Patent No. 769,377, dated September 6, 1904.

Application filed January 11, 1904. Serial No. 138,482. (No model.)

To aZZ whom, itjnay concern.-

Be it known that I, GEORGE A. GRAY, a citizen of the United States, residing at Cincinnati, Hamilton county, Ohio, (post-oflice address corner Crest street and C. H. & D. Railway, Cincinnati, Ohio,) have invented certain new and useful Improvements in Driving Mechanism for Metal-Planers, of which the following is a specification.

In the case of the metal-planer the return speed may be constant and as high as is conrate of the cutting speed should be subject'to adjustable variations in correspondence with the character of the material being cut. Such machines are likely to be operated either by belt-power or by motor and in some cases'by either, selectively.

My invention pertains to a driving mechanism to be mounted upon the upper portions of the housings and receive motion by belt from the source of power and transmit the motions onwardly to the planer or, as an alternative or an addition, the mechanism may be provided with a motor.v

My invention will be readily understood from the following description, taken in connection with the accompanying drawings, in

which Figure 1 is a side elevation of a driving mechanism embodying my invention, one of the ournal-boxes appearing 1n vertical longitudinal section; Flg. 2, an end elevation of the mechanism, the pivot-bearing for the belt-.

shifting lever appearing in vertical section; and Fig. 3 a-vertical transverse section of the apparatus.

In the drawings, 1 indicates a sole-plate for the support of the mechanism, which plate may be conveniently mounted upon the upper portions of the housings of a planer; 2, a pair of pedestals supported thereby and prov vided, preferably,- with journal-boxes of selfoiling type; 3, a shaft, herein termedthe quick shaft, journaled in the pedestals; 1, a splined shaft, herein termed the slow shaft, journaled in the pedestals parallel with the quick shaft; 5, aflat-faced pulley on the quick shaft, designed to transmit the constant-speed motion to the machine on which the apparatus is to be employed, being' the quick-backing speed of a metal-planer; 6, a

flat-faced pulley on the slow shaft, designed to transmit the variable cutting speed to the belt-power may be transmitted to the appa-1 ratus;'8, a motor, as an electric motor; 9, a pinion on the motor-shaft; 10, a gear on the quick shaft and engaged by the motorpinion; 11, 12, and 13, gears fast upon the quick shafts and separated some distance from each other; 14, 15, and 16, gears splined upon the slow shaft and arranged near each other and adapted for appropriate engagement'with gears 11, 12, 13, as hereinafter explained; 17, a shifting carrier for the splined gears to' permit of their being appropriately adjusted along the splined shaft, this carrier being provided with a, suitable detent; 18, a notched detent-plate cooperating with the detent of the carrier to serve in looking the sliding gears in adjusted position; 19, the belt-shipper rod pertaining to pulleys 7; 20, a shipper-lever connected with the shipper-rod and serving as means by which the belt pertaining to pulleys 7 may be shifted from one pulley to the other; 21, the supporting-pivot of the shipper-lever, this pivot being a bolt mounted in a bearing carried by the sole-plate, the bolt having a head upon its inin the counterbore of. the bearing of pivot bolt 21 and serving to urge the bolt inwardly and draw the shipper-lever frictionally against the face of its pivot-bearing; and 23 a pulley on the quick shaft for use in giving motion to the mechanism for raisingand lowering the rail of a planer.

In Fig. 1 assume a shifting belt for transmitting motion from pulley 5 to a planer to produce the quick backing motion of the table and assume a shifting belt for transmitting motion from the pulley 6 for the slow cutting motion of the planer, these belts being connected With and operating on the planer in the usual manner. Assume a driving-belt from a line-shaft or other suitable source of power to tight and loose pulleys 7. With the splined gears set as shown in Fig. 1 the quick shaft Will transmit speed to the slow shaft at certain rate dependent on the proportion of the engaged gears, and under these conditions the planer may be operated at a constant backing rate of speed and a constant cutting rate of speed bearing certain relations to each other. If now gear 16 be put into mesh With gear 11, then the speed of the slow shaft Will be increased, and under these conditions the planer Will have the same rate of backing speed as before, but a higher cutting rate. Again, if gear 14 be put into mesh with gear 13 then the cutting speed of the planer Will be still further increased, the backing speed remaining constant for all the changes of cutting speed. In the exemplification provision is made for three variations in the variable speed; but it is manifest that the number of selective pairs of gears may be increased, or, if desired, only tWo pairs need be provided.

The apparatus is started and stopped by manipulating the belt-shipper in an'obvious manner, and the spring-pivot of the shipper-lever tends to frictionally hold the lever in adjusted position. Under the conditions thus far assumed the motor 8 has been Without ofiice, and it might be absent or disconnected; but if present and connected up it is manifest that the motor is capable of giving motion at con stant rate to the quick shaft and that under these conditions pulleys 7 are Without oflice. In some cases it is desirable to provide only for the belt-driving of the apparatus, and in other cases it is desirable to provide only for the motor-driving of the apparatus, and in other cases it is desirable to provide the alternative means for driving.

I have referred to shaft 3 as the quick shaft and shaft 4: as the slow shaft, not by reason of their relative rates of turning, but by reason of the relative rates of motion to be imparted to the planer-table by them. Pulleys 5 and 23 respectively transmit constant backing rate of speed to the table and constant rate of speed to the mechanism for raising and lowering the rail, While pulley 6 transmits selective rate of cutting speed to the table. Pulleys 5 and 6 must be flat-faced pulleys in order that the belts driven by them may be shifted for alternative action, as usual. The sole-plate 1 being mounted upon the upper portions of the planer-housings serves not only to support the driving mechanism, but also as a strut at the upper portion of the housings, thus permitting the usual top-brace to be made much lighter and in some cases omitted altogether.

I claim as my invention 1. In a driving mechanism for metal-planers, the combination, substantially as set forth, of a sole-plate, pedestals mounted thereon, a pair of shafts mounted in the pedestals parallel with the sole-plate and with each other, means for rotating one of said shafts at substantially constant speed, dissimilar sized gears on one of said shafts, dissimilar-sized gears splined upon the other shaft to cooperate selectively with the first mentioned gears, a pulley fast on one of said shafts, and a pulley fast on the other of said shafts in a plane of revolution different from that of the first-mentioned pulley.

2. The combination of a substantially constant speed shaft, difl'erential gears thereon, a pair of fast and loose drive-pulleys, a transmitting-pulley and a drive-gear on said shaft, a variable-speed shaft, sliding dissimilar-sized gears splined thereto, a transmitting-pulley on the last-named shaft, a motor having a shaft provided with a gear thereon meshing with the gear on the constant-speed shaft, a belt-shipper for the fast and loose pulleys, and means for shifting the dissimilar-sized gears.

3. The combination of a substantially constant speed shaft, differential gears thereon, a pair of fast and loose drive-pulleys, differential pulleys and a drive-gear on said shaft, a variable-speed shaft, sliding dissimilar-sized gears splined thereto, a transmitting-pulley on the last-named shaft, a motor having a shaft provided with a gear thereon meshing With the gear on the constant-speed. shaft, a belt-shipper for the fast and loose pulleys, and means for shifting the dissimilar-sized gears.

GEORGE A. GRAY.

Witnesses:

\(VILLIAM W. PnAsn, WILLIAM VVIEssLnR, Jr. 

